From the 2000 workshop manual....
Backlash = .005 to .008"
max. variation between checkpoints = .002"
Pinion bearing preload with new bearing = 25-45#-in (not foot)
Total (pinion plus differential) preload with new bearings = add 6-8 #-in
Maximum spread of rear axle = .010"
Torque specs (#-ft):
Pinion shaft lock nut 470
Driveshaft bolts = 100
Differential bearing cap bolts = 80
Ring gear bolts — grade 9 = 220
Oil filler plug — 1/4-inch recess drive = 25
Differential housing cover bolts (F350) = 35
Differential housing cover bolts (F450-F550) = 45
Sensor (ABS) bolt = 30